package com.nowcoder.community.controller;

import com.nowcoder.community.entity.Comment;
import com.nowcoder.community.entity.DiscussPost;
import com.nowcoder.community.entity.Page;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.CommentService;
import com.nowcoder.community.service.DiscussPostService;
import com.nowcoder.community.service.LikeService;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.HostHolder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.*;

@Controller
@RequestMapping(path="/discuss")
public class DiscussPostController implements CommunityConstant {

    @Autowired
    private DiscussPostService discussPostService;

    @Autowired
    private HostHolder hostHolder;

    @Autowired
    private UserService userService;

    @Autowired
    private CommentService commentService;

    @Autowired
    private LikeService likeService;

    @RequestMapping(path="/add", method= RequestMethod.POST)
    @ResponseBody
    public String addDiscussPost(String title, String content) {
        User user = hostHolder.getUser();
        if(user == null) {
            return CommunityUtil.getJSONString(403, "你还没有登录!", null);
        }

        DiscussPost post = new DiscussPost();
        post.setUserId(user.getId());
        post.setTitle(title);
        post.setContent(content);
        post.setCreateTime(new Date());
        discussPostService.addDiscussPost(post);
//        报错的情况

        return CommunityUtil.getJSONString(0, "发布成功!",null);
    }

    @RequestMapping(path="/detail/{discussPostId}", method = RequestMethod.GET)
    public String getDiscussPost(@PathVariable("discussPostId") int discussPostId, Model model, Page page) {
//        帖子
        DiscussPost post = discussPostService.findDiscussPostById(discussPostId);
        model.addAttribute("post", post);
//        作者
        User user = userService.findUserById(post.getUserId());
        model.addAttribute("user", user);
//       点赞数量
        long likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_POST, discussPostId);
        model.addAttribute("likeCount", likeCount);
//        点赞状态
        int likeStatus = hostHolder.getUser() == null ? 0 :
                likeService.findEntityLikeStatus(hostHolder.getUser().getId(), ENTITY_TYPE_POST, discussPostId);
        model.addAttribute("likeStatus", likeStatus);
//        评论的分页信息
        page.setLimit(5);
        page.setPath("/discuss/detail/" + discussPostId);
        page.setRows(post.getCommentCount());

//      评论：给帖子的评论
//      回复：给评论的评论
//      评论列表

        List<Comment> commentList =  commentService.findCommentByEntity(ENTITY_TYPE_POST,
                post.getId(), page.getOffset(), page.getLimit());
//        评论的VO列表
        List<Map<String, Object>> commentVoList = new ArrayList<Map<String, Object>>();
        if(commentList != null && commentList.size() > 0) {
            for(Comment comment : commentList) {
//                评论Vo
                Map<String, Object> commentVo = new HashMap<String, Object>();
//                评论
                commentVo.put("comment", comment);
                likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_Comment, comment.getId());
                commentVo.put("likeCount", likeCount);
//                点赞状态
                likeStatus = hostHolder.getUser() == null ? 0 :
                        likeService.findEntityLikeStatus(hostHolder.getUser().getId(), ENTITY_TYPE_Comment, comment.getId());
                commentVo.put("likeStatus", likeStatus);
//                作者
                commentVo.put("user", userService.findUserById(comment.getUserId()));
//                回复列表
                List<Comment> replyList =  commentService.findCommentByEntity(
                        ENTITY_TYPE_Comment, comment.getId(), 0, Integer.MAX_VALUE);
//                回复VO列表
                List<Map<String, Object>> replyVoList = new ArrayList<>();
                if(replyList != null && replyList.size() > 0) {
                    for(Comment reply : replyList) {
                        Map<String, Object> replyVo = new HashMap<>();
//                        回复
                        replyVo.put("reply", reply);
//                        作者
                        replyVo.put("user", userService.findUserById(reply.getUserId()));
                        likeCount = likeService.findEntityLikeCount(ENTITY_TYPE_Comment, reply.getId());
                        replyVo.put("likeCount", likeCount);
//                点赞状态
                        likeStatus = hostHolder.getUser() == null ? 0 :
                                likeService.findEntityLikeStatus(hostHolder.getUser().getId(), ENTITY_TYPE_Comment, reply.getId());
                        replyVo.put("likeStatus", likeStatus);


//                        回复的目标
                        User target = reply.getTargetId() == 0 ? null : userService.findUserById(reply.getTargetId());
                        replyVo.put("target", target);
                        replyVoList.add(replyVo);
                    }
                }
                commentVo.put("replys", replyVoList);
//                回复数量
                int replyCount = commentService.findCommentCount(ENTITY_TYPE_POST, comment.getId());
                commentVo.put("replyCount", replyCount);
                commentVoList.add(commentVo);
            }
        }
        model.addAttribute("comments", commentVoList);
        return "/site/discuss-detail";
    }



}
